Severe Duty Cast Iron Motors

Texas Belting & Supply stocks 305 Severe Duty Cast Iron Motors - cast-iron, premium-efficient motors engineered for the worst industrial environments - the frames, seals, and paint systems resist corrosion, moisture, and vibration far better than rolled-steel general-purpose motors. Inverter-ready windings suit VFD control. Available from 1 to 300 HP in TEFC enclosures, with in-stock items that typically ship same-day. Call (888) 203-2358 for sizing help.

Common Applications

• Pulp, paper, and processing plants
• Wastewater and chemical facilities
• Outdoor and washdown installations
• VFD-driven variable-torque loads

Frequently Asked Questions

What makes a motor 'severe duty'?

Cast-iron frame, shaft slingers and epoxy-sealed bearings, corrosion-resistant paint, and (usually) premium efficiency with inverter-rated insulation - everything hardened for wet, dirty, high-vibration service.

Are these inverter/VFD rated?

Yes, these premium-efficient severe-duty motors carry inverter-rated insulation systems suitable for VFD operation. Confirm the constant-torque speed range for your application.

Do they meet premium-efficiency rules?

Yes - these meet NEMA Premium / DOE efficiency levels, which lowers operating cost over the motor's life.

Selection help: NEMA frame size chart · Motor cross-reference hub